package com.bite.forum.controller;


import com.bite.forum.common.AppResult;
import com.bite.forum.common.ResultCode;
import com.bite.forum.config.AppConfig;
import com.bite.forum.model.User;
import com.bite.forum.services.IUserService;
import com.bite.forum.utils.MD5Util;
import com.bite.forum.utils.StringUtil;
import com.bite.forum.utils.UUIDUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

@Api(tags = "用户接口")

@Slf4j
// 返回数据的Controller
@RestController
// 路由映射
@RequestMapping("/user")
public class UserController {

    @Resource
    private IUserService userService;

    /**
     *
     * @param username 用户名
     * @param nickname  用户昵称
     * @param password  密码
     * @param passwordRepeat 重复密码
     * @return
     */
    @ApiOperation("/用户注册")
    @PostMapping("/register")
    public AppResult register (@ApiParam("用户名") @RequestParam("username") @NonNull String username,
                               @ApiParam("昵称") @RequestParam("nickname") @NonNull String nickname,
                               @ApiParam("密码") @RequestParam("password") @NonNull String password,
                               @ApiParam("重复密码") @RequestParam("passwordRepeat") @NonNull String passwordRepeat){
//        if (StringUtil.isEmpty(password) || StringUtil.isEmpty(passwordRepeat)){
//            return AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE);
//        }

        // 校验密码与重复密码是否相同
        if (!password.equals(passwordRepeat)){
            log.warn(ResultCode.FAILED_TWO_PWD_NOT_SAME.toString());
            //返回错误信息
            return AppResult.failed(ResultCode.FAILED_TWO_PWD_NOT_SAME);
        }

        User user = new User();
        user.setUsername(username);
        user.setNickname(nickname);
        //处理密码
        // 1. 生成盐
        String salt = UUIDUtil.UUID_32();
        // 2.生成密码密文
        String encryptPassword = MD5Util.md5Salt(password, salt);
        // 3.设置密码和盐
        user.setPassword(encryptPassword);
        user.setSalt(salt);

        // 调用Service层
        userService.createNormalUser(user);
        //返回成功
        return AppResult.success();
    }

    /**
     * 用户登录
     * @param username 用户名
     * @param password 用户密码
     * @return
     */
    @ApiOperation("用户登录")
    @PostMapping("/login")
    public AppResult login (HttpServletRequest request,
                            @ApiParam("用户名") @RequestParam("username") String username,
                            @ApiParam("密码") @RequestParam("password") String password){
        //1.调用service登录方法，返回User对象
        User user = userService.login(username, password);
        if (user == null) {
            // 打印日志
            log.warn(ResultCode.FAILED_LOGIN.toString());
            //返回结果
            return AppResult.failed(ResultCode.FAILED_LOGIN);
        }
        //2.如果登录成功把User对象设置到Session作用域中
        HttpSession session=request.getSession(true);//true表示没有session对象时，创建一个session对象
        session.setAttribute(AppConfig.USER_SESSION,user);
        //3.返回结果

        return AppResult.success();
    }


    @ApiOperation("获取用户信息")
    @GetMapping("/info")
    public AppResult<User> getUserInfo (HttpServletRequest request,
                                        @ApiParam("用户id") @RequestParam(value = "id" ,required = false) Long id) {
        //定义返回的user对象
        User user = null;
        //根据id的值判断user对象的获取方式
        if (id== null){
            //1.如果id为空，从Session获取当前用户信息
            HttpSession session = request.getSession(false);//如果没有session不创建
            //从session中获得信息
            user = (User) session.getAttribute(AppConfig.USER_SESSION);
        }else {
            //2.id不为空，从数据库获取
            user = userService.selectById(id);
        }
        // 判断user是否为空
        if (user==null){
            return AppResult.failed(ResultCode.FAILED_USER_NOT_EXISTS);
        }

        return AppResult.success(user);
    }


    @ApiOperation("退出登录")
    @GetMapping("/logout")
    public AppResult logout (HttpServletRequest request){
        //获取session对象
        HttpSession session =request.getSession(false);
        //判断session是否有效
        if (session != null){
            //打印日志
            log.info("退出成功");
            //表示用户在登录状态,直接销毁session
            session.invalidate();
        }
        return AppResult.success("退出成功");
    }

    @ApiOperation("修改个人信息")
    @PostMapping("/modifyInfo")
    public AppResult modifyInfo (HttpServletRequest request,
                                 @ApiParam("用户名") @RequestParam(value = "username",required = false) String username,
                                 @ApiParam("昵称") @RequestParam(value = "nickname",required = false) String nickname,
                                 @ApiParam("性别") @RequestParam(value = "gender",required = false) Byte gender,
                                 @ApiParam("邮箱") @RequestParam(value = "email",required = false) String email,
                                 @ApiParam("电话号") @RequestParam(value = "phoneNum",required = false) String phoneNum,
                                 @ApiParam("个人简介") @RequestParam(value = "remark",required = false) String remark){

        //非空校验
        if (StringUtil.isEmpty(username) && StringUtil.isEmpty(nickname)
                && StringUtil.isEmpty(email) && StringUtil.isEmpty(phoneNum)
                && StringUtil.isEmpty(remark) && gender == null){
            //返回错误信息
            return AppResult.failed("请输入要修改的内容");
        }

        //session中获取用户Id
        HttpSession session= request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);

        //封装对象
        User updateUser =new User();
        updateUser.setId(user.getId());
        updateUser.setUsername(username);
        updateUser.setNickname(nickname);
        updateUser.setGender(gender);
        updateUser.setEmail(email);
        updateUser.setPhoneNum(phoneNum);
        updateUser.setRemark(remark);

        //调用Service
        userService.modifyInfo(updateUser);
        //查询最新的用户信息
        user = userService.selectById(user.getId());

        //把最新的用户信息设置到session中
        session.setAttribute(AppConfig.USER_SESSION,user);
        //返回结果
        return AppResult.success(user);
    }

    @ApiOperation("修改密码")
    @PostMapping("/modifyPwd")
    public AppResult modifyPassword(HttpServletRequest request,
                                    @ApiParam("原密码") @RequestParam("oldPassword") @NonNull String oldPassword,
                                    @ApiParam("新密码") @RequestParam("newPassword") @NonNull String newPassword,
                                    @ApiParam("确认密码") @RequestParam("passwordRepeat") @NonNull String passwordRepeat){
        //校验新密码与确认密码是否相同
        if (!newPassword.equals(passwordRepeat)){
            //返回错误信息
            return AppResult.failed(ResultCode.FAILED_TWO_PWD_NOT_SAME);
        }
        //获取当前登录的用户信息
        HttpSession session=request.getSession(false);
        User user= (User) session.getAttribute(AppConfig.USER_SESSION);
        //调用Service
        userService.modifyPassword(user.getId(),newPassword,oldPassword);
        //销毁session
        if (session != null){
            session.invalidate();
        }
        //返回结果
        return AppResult.success();
    }

}
